/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package econutri.servicos.acesso;

import econutri.persistencia.entidades.Usuario;
import econutri.persistencia.dao.UsuarioDAO;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Leonardo Oliveira Moreira
 */
public class LoginServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String login = request.getParameter("login");
        String senha = request.getParameter("senha");
        boolean loginAccepted = false;
        Usuario usuario = null;
        if (login != null && login.trim().length() > 0 && senha != null && senha.trim().length() > 0) {
            UsuarioDAO dao = new UsuarioDAO();
            usuario = dao.getUsuarioByLogin(login);
            if (usuario != null) {
                String querySenha = usuario.getSenha();
                if (querySenha != null && senha != null && querySenha.equals(senha)) {
                    loginAccepted = true;
                }
            }
            request.setAttribute("login", login);
        }
        if (loginAccepted) {
            HttpSession session = request.getSession(true);
            session.setAttribute("usuario", usuario);
            Locale locale = new Locale("pt", "BR");
            SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd 'de' MMMM 'de' yyyy", locale);
            session.setAttribute("inicioLogin", sdf.format(new Date()));
            RequestDispatcher dispatcher = request.getRequestDispatcher("InicioServlet");
            dispatcher.forward(request, response);
        } else {
            request.setAttribute("mensagem", "Não foi possível efetuar a identificação");
            RequestDispatcher dispatcher = request.getRequestDispatcher("index.jsp");
            dispatcher.forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
